Application-Specific Catalyst Layers: Pt-Containing Carbon Nanofibers for Hydrogen Peroxide Detection

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorLaurila, Tomien_US
dc.contributor.authorSainio, Samien_US
dc.contributor.authorJiang, Huaen_US
dc.contributor.authorIsoaho, Nooraen_US
dc.contributor.authorKoehne, Jessicaen_US
dc.contributor.authorEtula, Jarkkoen_US
dc.contributor.authorKoskinen, Jarien_US
dc.contributor.authorMeyyappan, M.en_US
dc.contributor.departmentDepartment of Electrical Engineering and Automationen
dc.contributor.departmentDepartment of Applied Physicsen
dc.contributor.departmentDepartment of Chemistry and Materials Scienceen
dc.contributor.groupauthorNanoMaterialsen
dc.contributor.groupauthorMicrosystems Technologyen
dc.contributor.organizationNASA Ames Research Centeren_US
dc.date.accessioned2017-03-23T12:48:24Z
dc.date.available2017-03-23T12:48:24Z
dc.date.issued2017-02-13en_US
dc.description.abstractComplete removal of metal catalyst particles from carbon nanofibers (CNFs) and other carbon nanostructures is extremely difficult, and the envisioned applications may be compromised by the left-over impurities. To circumvent these problems, one should use, wherever possible, such catalyst materials that are meant to remain in the structure and have some application-specific role, making any removal steps unnecessary. Thus, as a proof-of-concept, we present here a nanocarbon-based material platform for electrochemical hydrogen peroxide measurement utilizing a Pt catalyst layer to grow CNFs with intact Pt particles at the tips of the CNFs. Backed by careful scanning transmission electron microscopy analysis, we show that this material can be readily realized with the Pt catalyst layer thickness impacting the resulting structure and also present a growth model to explain the evolution of the different types of structures. In addition, we show by electrochemical analysis that the material exhibits characteristic features of Pt in cyclic voltammetry and it can detect very small amounts of hydrogen peroxide with very fast response times. Thus, the present sensor platform provides an interesting electrode material with potential for biomolecule detection and in fuel cells and batteries. In the wider range, we propose a new approach where the selection of catalytic particles used for carbon nanostructure growth is made so that (i) they do not need to be removed and (ii) they will have essential role in the final application.en
dc.description.versionPeer revieweden
dc.format.extent496-507
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationLaurila, T, Sainio, S, Jiang, H, Isoaho, N, Koehne, J, Etula, J, Koskinen, J & Meyyappan, M 2017, ' Application-Specific Catalyst Layers : Pt-Containing Carbon Nanofibers for Hydrogen Peroxide Detection ', ACS Omega, vol. 2, no. 2, pp. 496-507 . https://doi.org/10.1021/acsomega.6b00441en
dc.identifier.doi10.1021/acsomega.6b00441en_US
dc.identifier.issn2470-1343
dc.identifier.otherPURE UUID: c11fbb51-4ddb-4f94-b670-41e618b11010en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/c11fbb51-4ddb-4f94-b670-41e618b11010en_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/11520101/acsomega.6b00441.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/24938
dc.identifier.urnURN:NBN:fi:aalto-201703233181
dc.language.isoenen
dc.relation.ispartofseriesACS Omegaen
dc.relation.ispartofseriesVolume 2en
dc.rightsopenAccessen
dc.titleApplication-Specific Catalyst Layers: Pt-Containing Carbon Nanofibers for Hydrogen Peroxide Detectionen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
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[article-cris] Kemian tekniikan korkeakoulu / CHEM